Hottest Questions This Week

26

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2

answers

6k

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When a candle burns, why does the top of wick glow if bottom of flame is hottest?

modified Apr 18 at 15:25 David Richerby 336

6

votes

2

answers

2k

views

Does the main washing effect of soap come from foam?

everyday-chemistry cleaning

answered 2 days ago Dumbassahedratron 27

3

votes

2

answers

257

views

Why is my conclusion inconsistent with the van't Hoff equation?

thermodynamics free-energy

modified Apr 17 at 0:48 andselisk 19.6k

7

votes

1

answer

353

views

Can the van der Waals coefficients be negative in the van der Waals equation for real gases?

physical-chemistry gas-laws

modified 2 hours ago Apoorv Potnis 701

7

votes

1

answer

183

views

Why does electrolysis of aqueous concentrated sodium bromide produce bromine at the anode?

electrolysis

modified Apr 20 at 12:38 Poutnik 1,509

5

votes

2

answers

179

views

Does silver oxide react with hydrogen sulfide?

inorganic-chemistry

answered 2 days ago MaxW 16k

4

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1

answer

182

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Electrolysis of water: Which equations to use? (IB Chem)

physical-chemistry electrochemistry redox water reduction-potential

modified Apr 19 at 17:20 Poutnik 1,509

6

votes

1

answer

53

views

Mechanism of oxidative dearomatisation with hypervalent iodine

organic-chemistry reaction-mechanism aromatic-compounds organic-oxidation

answered Apr 20 at 10:09 orthocresol♦ 40.5k

3

votes

1

answer

133

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LDA and an aldehyde

organic-chemistry reaction-mechanism

modified Apr 17 at 13:57 andselisk 19.6k

3

votes

2

answers

64

views

Scientific Reason for Salt Solution Gaining Volume

physical-chemistry everyday-chemistry experimental-chemistry solutions

modified Apr 17 at 14:42 Poutnik 1,509

3

votes

1

answer

95

views

How do I decide whether ring will expand in this reaction or not?

organic-chemistry reaction-mechanism reactivity

modified 3 hours ago Saurav Singh 144

2

votes

3

answers

70

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Synthetic steps for the interconversion between aldehydes and ketones

organic-chemistry synthesis carbonyl-compounds

modified 14 hours ago James Bond 48

3

votes

3

answers

86

views

What defines a discharged battery?

everyday-chemistry electrochemistry redox

answered Apr 19 at 20:30 A.K. 10.7k

3

votes

1

answer

59

views

How to programmatically identify a chemical compound in my program?

cheminformatics

modified Apr 18 at 17:56 gilleain 1,428

0

votes

1

answer

51

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Why do metals form cations?

reaction-mechanism metal periodic-trends

modified Apr 17 at 8:19 Liam 123

1

vote

1

answer

62

views

How do I calculate the hydronium ion concentration if I know the strontium hydroxide concentration?

acid-base ph concentration hydrolysis

modified Apr 20 at 8:42 andselisk 19.6k

4

votes

1

answer

79

views

Redox Combustion Reactions

redox combustion

modified yesterday sab hoque 144

0

votes

1

answer

126

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Mechanism of ring formation of an epoxide under acidic aqueous conditions

reaction-mechanism alcohols carbocation

modified yesterday orthocresol♦ 40.5k

1

vote

1

answer

44

views

Which is more stable in gas phase, free radicals or ions?

kinetics ions radicals

modified Apr 20 at 17:36 A.K. 10.7k

5

votes

1

answer

55

views

Can a double bond extend beyond the plane and if so, how would it be drawn?

bond stereochemistry notation

answered yesterday andselisk 19.6k

1

vote

2

answers

39

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A sample must not contain more than 2% contaminants to be pure. Are there instances where 2.12% is ok?

significant-figures

modified yesterday MaxW 16k

1

vote

2

answers

50

views

How can we tell if an ion is amphiprotic [on hold]

acid-base

answered Apr 19 at 9:23 MaxW 16k

0

votes

2

answers

53

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Determining amounts of product and excess reagent remaining post reaction

inorganic-chemistry stoichiometry mole

modified yesterday MaxW 16k

3

votes

1

answer

39

views

Why is casein hydrophobic?

molecular-structure intermolecular-forces polarity proteins

modified 36 mins ago Luquettm 116

2

votes

2

answers

50

views

MO diagram of BeH₂

inorganic-chemistry molecular-orbital-theory electrons

answered Apr 17 at 18:09 MaxW 16k

1

vote

1

answer

64

views

How to write electronic configuration of p-orbitals?

electrons electronic-configuration

modified Apr 20 at 10:16 aesking 109

2

votes

1

answer

63

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Gibbs Free Energy and Maximum Work

physical-chemistry thermodynamics free-energy

modified Apr 18 at 22:26 Karsten Theis 4,781

5

votes

0

answers

62

views

Contribution of vibrational degrees of freedom

thermodynamics

modified yesterday Tyberius 7,355

6

votes

0

answers

57

views

Mechanism for Friedel-Crafts Acylation in Synthesis of Sertraline

organic-chemistry reaction-mechanism

modified Apr 19 at 14:45 Waylander 6,898

-3

votes

1

answer

57

views

Questions in Equilibrium [on hold]

physical-chemistry equilibrium

modified Apr 20 at 14:01 Poutnik 1,509

1

vote

1

answer

44

views

What happens when an ionic compound is boiled? [on hold]

bond ionic-compounds

modified 2 days ago M. Farooq 1,923

2

votes

0

answers

69

views

Importance of substrate stereo chemistry in semi pinacol rearrangement [closed]

organic-chemistry

modified 2 days ago Karsten Theis 4,781

4

votes

1

answer

31

views

Why is the graph of fluorescence vs. wavelength continuous?

physical-chemistry quantum-chemistry electronic-configuration uv-vis-spectroscopy

answered 23 hours ago Andrew 1,342

2

votes

1

answer

48

views

Proving a relation for fugacity of component i in term of independent variables (T,V)

physical-chemistry thermodynamics equilibrium

modified 2 days ago andselisk 19.6k

1

vote

1

answer

61

views

How to calculate pH of basic salt solution mixed with strong base?

acid-base ph

answered 16 hours ago Adnan AL-Amleh 519

1

vote

1

answer

35

views

Grignard reagent and acidic hydrogen

organic-chemistry grignard-reagent

modified Apr 20 at 2:24 andselisk 19.6k

0

votes

1

answer

44

views

Point group from mono to bulk MoS2

symmetry group-theory

answered yesterday Yusabar 11

0

votes

1

answer

44

views

What defines a proton as “labile” in NMR? [on hold]

analytical-chemistry nmr-spectroscopy

modified 2 days ago Night Writer 2,891

0

votes

1

answer

44

views

Rate of hydrolysis of ester in presence of an acidic medium

organic-chemistry kinetics hydrolysis esters

modified yesterday Rodrigo de Azevedo 898

-2

votes

1

answer

42

views

Are these calculations valid enough? [on hold]

thermodynamics

modified 2 days ago user1476176 146

0

votes

2

answers

42

views

Size of hydrocarbons and boiling point

hydrocarbons boiling-point

modified Apr 18 at 12:34 Karsten Theis 4,781

2

votes

1

answer

32

views

Derive expression for heat flow from oil bath to metal sphere

physical-chemistry heat thermal-conductivity

modified 7 hours ago Karsten Theis 4,781

-1

votes

3

answers

31

views

ICE table with changing volume without Kc

equilibrium

answered 30 mins ago Mathew Mahindaratne 6,497

0

votes

1

answer

39

views

2-step reaction mechanism for the decomposition of NO2Br

reaction-mechanism kinetics

modified 2 days ago Gaurang Tandon 5,448

1

vote

1

answer

39

views

CIP Rules - How to deal with a double bonded nitrogen? [on hold]

organic-chemistry nomenclature

modified Apr 17 at 20:43 Buttonwood 9,667

0

votes

0

answers

46

views

Why charged canonical structures of phenanthracene are not taken into account? [on hold]

organic-chemistry aromatic-compounds resonance

modified Apr 18 at 4:21 Luquettm 116

0

votes

1

answer

45

views

Maximum number of atoms in the ground state

physical-chemistry atomic-structure

modified Apr 19 at 11:00 Aspirant 7

2

votes

1

answer

44

views

Can you lower the alcohol concentration of a drink using vegetable oils?

solubility alcohols lipids

answered Apr 18 at 20:22 Karl 6,406

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